Cooking-stove



w. B. TREADWELL Cooking Stove.

Patented June 3, 1856.

m'Znessas NT STATES WILLIAM B. TREADWELL, OF ALBANY, NEW YORK.

COOKING-STOVE.

T0 CZZZ whom 2'25 may concern Be it known that I, WILLIAM B. TREAD- WELL, of Albany, in the State of New York, have invented a new and useful Improvement in Cooking-Stoves, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which Figure l, is a central longitudinal vertical section; Figs. 2, and 3, cross vertical sections taken at the lines A, a, and B, Z), of Fig. 1; and Fig. 4, a horizontal section taken just below the top plate of the stove.

The same letters indicate like parts in all the figures.

My invention relates to an improvement in what is known as the rolling oven stove in which the products of combustion, starting from the fire chamber, pass over a plate above the oven, down the back, under the oven, up in front, and then over the top of the oven in a flue space between the top oven plate and the plate above it over which the said products pass when first leaving the oven; but as these stoves have been heretofore constructed no heat is imparted to the oven until after the fire has been so far excited that the products of combustion can be carried entirely around the oven, because when the fire is first started or at any time when the draft is opened directly to the exit pipe the heated products of combustion pass over the top plate of the flue on the top of the oven, and as this flue extends the whole width of the oven, it acts as a nonconductor to prevent the heat from passing tlnough the top of the oven. By my improvement I remedy this defect while at the same time I retain all the advantages due to the carrying ofthe draft entirely around the oven, and my said invention for this purpose consists in connecting the flue in front of the oven with the exit pipe by means of a tubular flue or fiues, at top and forming part ofthe top of the oven, in combination with the oven top plate which fits around or which is cast around the said tubular flue or fines, whereby a single plate is interposed between the upper part of the oven, and the direct top flue, all around the said tubular flue or flues, so that the upper part of the oven will be heated by the passage of the products of combustion directly from the fire chamber to the exit pipe, while at the same time the said tubular flue or fiues form part of the heating surface of the top of the oven when the draft is carried entirely around the oven.

In the accompanying drawings a represents the fire chamber and Z), the oven, such as are usually employed in stoves of this class, the said oven being extended under the ash pan and up back of the fire back. A direct fine 0, extends directly from the fire chamber over the top plate (Z of the oven to the exit pipe which is governed by a damper e, that the draft may be carried directly out or down a diving flue f, at the back of the oven, thence in a flue g, under the oven to a rising flue h, at the extreme front of the oven. This rising flue It, opens into a horizontal flue 2', under the ash pan, and this in turn opens into a rising flue j, in the fire back, the upper end of which is formed by the top plate (Z, of the oven. In the said top plate (Z, or oven top, and, as I prefer to make it, cast with the said plate, are two (more or less) tubular fiues Z, Z, which connect the flue j, in the fire back with the exit pipe at m, m. The under surface of these tubular fiues forms part of the oven top, so that when the damper e, is closed and the draft passes entirely around the oven the upper part of the said oven is heated by the products of combustion passing oven the plate (Z, and also through the tubes Z, Z, after passing entirely around the oven, but when the damper is open to carry the draft directly from the fire chamber over the plate (Z, to the exit pipe, then the oven will be heated by radiation through the said plate (Z, all around the tubes Z, Z. In this way I retain all the advantages of the rolling oven stove by carrying the draft entirely around the oven, with the advantages due to what is known as the return oven stove, of heating the upper part of the oven with the direct draft.

hat I claim as my invention and desire to secure by Letters Patent is Connecting the flue in front of the oven with the exit pipe by means of a tubular flue or flues at top and forming part of the top of the oven, substantially as specified, in combination with the plate which forms the residue of the top of the oven, substantially as and for the purpose specified.

WM. B. TREADWELL. l/Vitnesses S. W. ADAMS, RIoHD. M. RAND. 

